Piper PA-28RT-201T - Page 335

29-00-02
Page 29-14
December 1, 1978
2C8
CHART 2901. HYDRAULIC SYSTEM TROUBLESHOOTING (cont.)
Landing gear fails to operate Friction or tight connection Clean, free and lubricate
at required speeds. (Gear up at any of the attachment all pivot points.
at 103 KIAS for PA-28RT- points (pivot points) of the
201T or 95 KIAS for override lever or actuator
PA-28RT-201, gear down at arm.
78 KIAS for PA-28RT-201T
or 75 KIAS for PA-28RT-
201. (cont.)
Binding of diaphragm shaft Clean all moving parts.
caused by build up of sand
or dirt.
Landing gear will not retract Restriction in pressure head Disconnect hoses at back-up
after selecting up at an air- of head back-up extender extender and clean out
speed above actuator speed. actuator. hoses and head.
(Also upon trying to over-
ride it is found that only
with a steady pressure can
the override be activated.
After gear does retract and
the override lever (manual
extruder) is relaxed (approx-
imately 11 to 15 seconds)
the gear will fall free.
With gear selector down Shorted gear up solenoid. Replace solenoid.
and three green lights on,
gear unsafe light comes on
or intermittently on.
With gear selector down Shorted gear up solenoid. Replace solenoid.
and three green lights on,
pump motor circuit breaker
opens.
With gear unsafe light on, Shorted gear down sole- Replace solenoid.
pump operates on and off. noid.
With gear unsafe light on, Shorted gear down sole- Replace solenoid.
pump motor circuit noid.
breaker opens.
Trouble Cause Remedy
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL